ESRI ArcGIS 10.1.1 navigation on the map using the GPS device in IOS SKD

To achieve this, ESRI ArcGIS 10.1.1 uses the GPS device in ios skd to navigate the map.

References: http://gis.stackexchange.com/questions/57487/force-arcgis-ios-to-use-gps-data-from-external-gps-device

Example:
Http://www.arcgis.com/home/item.html? Id = 5e9fe50031f5461796b5d158a11d0bad

Steps:

1. Define a mapview object.

   AGSMapView* _mapView;

2. Use the locationdisplay Method

   [Self. mapview. locationdisplay addobserver: Self forkeypath: @ "navigationmode" Options :( nskeyvalueobservingoptionnew) Context: NULL]; self. mapview. locationdisplay. autopanmode
   = Agslocationdisplayautopanmodenavigation;

3. Switch the location switch function

   -(Ibaction) locationbtnclicked :( ID) sender {nslog (@ "start locating"); If (! Self. mapview. locationdisplay. performancestarted) {[self. mapview. locationdisplay startdatasource]; self. mapview. locationdisplay. autopanmode = agslocationdisplayautopanmodedefault; // set a wander extent equal to 75% of the map's envelope // The map will re-center on the location symbol only when // The symbol moves out of the wander extent/ /self. mapview. locationdisplay. wandreextentfactor = 0.75;} else {[self. mapview. locationdisplay stopdatasource] ;}}

4. Implementation and positioning Methods

   - (void)observeValueForKeyPath:(NSString *)keyPath  ofObject:(id)object                        change:(NSDictionary *)change                       context:(void *)context {}